What are the functions of the various components in 8085 microprocessor?
The architecture of the 8085 microprocessor mainly includes the timing & control unit, Arithmetic and logic unit, decoder, instruction register, interrupt control, a register array, serial input/output control. The most important part of the microprocessor is the central processing unit.
What is the function of instruction register in 8085?
IR (Instruction Register) is a special purpose register, which is used to receive the 8-bit opcode portion of an instruction. It is not accessible to the programmer.
What is the function of instruction register and decoder in 8085 microprocessor?
Instruction register and decoder It is an 8-bit register. When an instruction is fetched from memory then it is stored in the Instruction register. Instruction decoder decodes the information present in the Instruction register.
What is the function of memory data register?
Unsourced material may be challenged and removed. A memory buffer register (MBR) (also known as memory data register (MDR)) is the register in a computer’s processor, or central processing unit, CPU, that stores the data being transferred to and from the immediate access storage.
What is the function of the program counter?
The program counter stores the address of each instruction and tells the CPU in what order they should be carried out. When a program is being executed, the CPU performs the fetch-decode-execute cycle, which repeats over and over again until reaching the STOP instruction.
What are micro operations and give an example?
A micro-operation is an elementary operation performed on the information stored in one or more registers. Example: Shift, count, clear and load. In computer central processing units, micro-operations (also known as micro-ops) are the functional or atomic, operations of a processor.
What’s the difference between register and cache memory?
The cache needs to be much faster than main memory….Difference between Cache Memory and Register :
| S.No. | CACHE MEMORY | REGISTER |
|---|---|---|
| 1. | Cache is a smaller and fastest memory component in the computer. | Registers is a small amount of fast storage element into the processor. |
| 2. | Cache memory is exactly a memory unit. | It is located on the CPU. |
What are the different types of cache memory?
There is three types of cache: direct-mapped cache; fully associative cache; N-way-set-associative cache.
What are the types of memory?
Most scientists believe there are at least four general types of memory:
- working memory.
- sensory memory.
- short-term memory.
- long-term memory.